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作 者:王京晶 聂红海[1] 蔡斯龙 WANG Jingjing;NIE Honghai;CAI Siong(Hydrological Bureau of Guangdong Province,Guangzhou 510150,China;Qingyuan Hydrology Branch of Hydrological Bureau of Guangdong Province,Qingyuan 511500,China)
机构地区:[1]广东省水文局,广东广州510150 [2]广东省水文局清远水文分局,广东清远511500
出 处:《水文》2025年第1期106-112,共7页Journal of China Hydrology
基 金:国家自然科学基金重点项目(5223000429)。
摘 要:2022年6月受西南季风和高空槽的共同影响,广东省北江流域地区出现了三轮强降雨事件,其中第3轮强降雨直接引发2022年第2号洪水(简称“22·6”洪水),是自1915年以来防御形势最为严峻的洪水。通过对北江干流及主要支流发生的暴雨洪水及灾情进行广泛深入的野外调查考证,总结了北江干流及其重要支流控制站的洪水频率分析成果,与历史大洪水进行比较分析,经系统科学地评价,“22·6”洪水为超100年一遇的流域性特大洪水,中下游洪水超300年一遇。相关成果可为今后广东省北江流域及其下游大湾区的防洪减灾、工程优化调度、规划建设等工作提供决策依据。In June 2022,under the combined influence of the southwest monsoon and an upper-level trough,three rounds of heavy rainfall occurred in the Beijiang River Basin of Guangdong Province.The third round of heavy rainfall directly triggered the"2022 No.2 Flood"("22·6 Flood"for short),resulting in the most severe flood control challenge since 1915.By conducting exten-sive and in-depth field investigations and analysis of rainstorm-induced floods and associated disasters in the main stream and major tributaries of the Beijiang River,and through comparative analysis with historical floods,Flood frequency analysis at the con-trol stations on the Beijiang main stream and its major tributaries were conducted.The"22·6"flood was systematically and scien-tifically evaluated as a catastrophic basin-wide flood exceeding a 100-year return period,with downstream river sections experienc-ing floods exceeding a 300-year return period.These findings could provide a decision-making basis for future flood control and disaster reduction,engineering optimization and scheduling,planning and construction in the Beijiang River Basin and Guangdong-Hong Kong-Macao Greater Bay Area.
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